Isolated path coupling system

Details Isolated path coupling system Isolated path coupling system

1975-04-03

1978-10-03

McGlynn, Joseph H.

Geometrical instruments

339DIG3, H01R 1300

Patent

active

041181026

ABSTRACT:
A circuit board or sheet of homogeneous material having one or more circuit elements adhering to a surface thereof, said sheet providing a low through resistance path between each circuit element and opposed and aligned contacts positioned in surface contact with the opposite side of the sheet while providing a high isolation resistance between out of alignment contacts positioned on the opposite side of the sheet and between contacts positioned on the same side of the sheet positioned an isolation distance from said circuit elements. The circuit board with a circuit pattern is shown in various applications, such as keyboard or watch.

REFERENCES:
patent: 2744981 (1956-05-01), Spears
patent: 3028573 (1962-04-01), Stoehr
patent: 3509296 (1972-03-01), Du Rocher
patent: 3648002 (1970-04-01), Harshman
patent: 3680037 (1972-07-01), Nellis et al.
patent: 3883213 (1975-05-01), Glaister
Einolf et al.; "Pressure Controlled Resistance Matrix"; IBM Tech. Disclosure Bulletin, vol. 6, #3; Aug. 1963, p. 4.

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